Today’s Current Affairs Update: “ProxyGyan IAS Express”
Date: 11 July 2024.
1. Siang
2. Power of Attorney
3. Salazar Pit Viper
4. Denisovans
5. CURIE
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Siang River:
• News: Thelocals are protesting against an Upper Siang dam project in Arunachal
Pradesh
• Upper siang Hydropower Project:
o The Upper Sang project is a proposed 11,000-megawatt hydropower project on the Siang River in the Upper Siang district of Arunachal Pradesh.
• Origin:
o The Siang River originates near Mount Kailash in Tibet, where it is known as the Tsangpo.
• Tributaries in India:
• Northern Tributaries: Subansir, Ronganadi, Dikrong, Buro, Borgong, Jiabharali, Dhansiri (North), Puthimari, Manas, Beki, Aie, Sonkosh.
• Southern Tributaries: Noadehing, Buridehing, Desang, Dikhow, Bhogdoi, Dhansiri (South), Kopilli, Kulsi, Krishnai, Dhdhnoi, Jinjiram.
2. Power of Attorney:
• News: The Supreme Court has observed that there would be an implied revocation of Power of Attorney granted to the agent if the act of Principal choosing to act for himself is known to an agent and third person.
• Power of Attorney (POA)
• A Power of Attorney (POA) is a legal authorizationthat grants an agent or attorney-in-fact the authority to act on behalf of an individual, known as the principal.
• This arrangement creates a principal-agent relationship where the agent acts as the principal's representative.
• Scope of Authority:
• The agent can be granted broad or limited powers to make decisions regarding the principal's property, finances, investments, or medical care, based on the terms specified in the POA
• Activation of POA:
• A POA becomes effective if the principal is incapacitated due to illness or disability.
• Additionally, the agent can act on behalf of the principal if the principal is unavailable to handle financial or legal transactions.
• Termination of POA: A POA ends under the following circumstances:
o. The principal dies.
• The principal revokes the POA
• A court invalidates the POA.
• The principal divorces a spouse who holds the POA
•. The agent is unable to continue performing the duties outlined in the POA.
3. Species in News: Salazar Pit Viper
• News: A snake, named after Harry Potter character Salazar Slytherin, was found in Assam's Kaziranga National Park.
• What are Pit Vipers?
• Definition:
• Pit vipers are a subfamily of venomous snakes that possess a heat-sensitive pit organ located between each eye and nostril, in addition to two movable fangs.
• Heat-Sensing Ability:
• The pit organallows them to detect infrared thermal radiation (heat) emitted by their prey, enabling them to hunt effectively in the dark.
• Habitat:
• Found in diverse habitats, including deserts, forests, grasslands, and wetlands.
• Adaptability:
• They can be terrestrial, arboreal, or aquatic.
• Distribution
• Present on every continent except Antarctica.
• Most species are found in tropical and subtropical regions, with some species also inhabiting temperate regions.
° A significant number of species are located in Asia and the Americas.
• Reproduction
o Egg-Laying and Live Birth: Some species lay eggs, while others give birth to live young.
4. Denisovans:
• News: Scientists have revealed mysterious Denisovan human species used to live 160,000 years ago on the Tibetan plateau.
• Archaeological Site:
• The exact location of this cave is said to be near the city of Xiahe in China's Gansu province.
• Denisovans:
• Denisovans are an extinct species of hominids closely related to modern humans.
• They are a relatively recent addition to the human family tree, with the first Denisovan remains discovered in a Siberian cave in 2010.
• Geographic Range and Habitat:
• Denisovans inhabited a diverse range of environments, from the cold mountains of Siberia and Tibet to the jungles of Southeast Asia, during the last Ice Age.
• Time Period:
• Denisovans lived approximately from 500,000 to 30,000 years ago.
Genetic Relationships:
• DNA evidence indicates that Denisovans are related to both Neanderthals and modern humans.
• They likely interbred with both species.
• Denisovans share a common ancestor with modern humans and Neanderthals, known as Homo heidelbergensis, which likely lived in Africa.
• Physical Characteristics:
• Denisovans may have had dark skin, dark hair, and dark eyes.
5. CURIE (Cubeat Radio Interferometry Experiment):
• News: NASA is preparing to launch the CubeSat Radio Interferometry Experiment (CURIE) mission to explore the origins of solar radio waves.
• About CURIE:
o. CURIE employs a pioneering technique known as low-frequency radio interferometry, marking its debut in space applications.
o. The mission comprises two miniature spacecrafts, each no larger than a shoebox, which will orbit Earth approximately two miles apart.
o. This separation allows the instruments to detect subtle differences in the arrival times of radio waves, enabling precise identification of their solar source.
• Working Mechanism:
• Frequency Range: CURIE will measure radio waves in the 0.1 to 19 megahertz range, frequencies that are blocked by Earth's upper atmosphere and thus require space-based observations.
• Orbit: The spacecraft will orbit 360 miles above Earth's surface to achieve an unobstructed view of the Sun's radio emissions.
• Deployment: Once in orbit, the two CURIE spacecraft will separate, deploy their eight-foot antennas, and commence data collection.
• Significance:
• This mission aims to enhance our understanding of solar phenomena and set the stage for future space-based radio astronomy projects.
• Sponsorship
• CURIE is sponsored by NASA's Heliophysics Flight Opportunities for Research and Technology (H-FORT) Program.
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